Irig performance on Ipad 4?

I was thinking of getting the Irig for ipad 4 but i've discovered a lot of people have been complaining about the noise feedback being very loud which makes it unusable. I've heard its mainly on the ipad 3. Most people which are using it on the first ipad or 2nd seem to say it works just fine.
So has anyone tried it with the ipad 4 yet. If so how is its performance with Amplitube and Garageband?